Sash-fastener



(No Model.) W

A. JOHNSON.

SASH PASTBNER. No. 256,144. Patented Aprpll, 1882.

" "Usirrnn STATES new rates.

ALONZO JOHNSON, OF SPRlNGFlELD, MASSACHUSETTS.

SASH-FASTENER.

SPECIFICATION forming part of Letters Patent No, 256,144 dated April 11,1882.

Application filed September 23,1881. (NO modem To all whom it mayconcern:

Be it known that I, ALONZO JOHNSON, a citizen of the United States,residiii g at Springfield, in the county of Hampden and State ofMassachusetts, have invented new and useful Improvements inWindow-Stops, of which the following is a specification.

This invention relates to the details of the construction of an improvedwindow stop adapted to be secured upon the face of one of thesash-stiles, and to be engaged with the window-casin g by having an armthereon enter stop-cavities formed in said casing, the object being toprovide more especially a convenient, strong, and positive stop for useupon the window-sashes of railway-cars, which consists of few pieces,and whose manner of manipulatiou cannot be easily misunderstood.

In the drawings forming part of this specification, Figure 1 representsa section of a window sash and frame having secured upon said sash awindow-stop constructed according to my invention. Fig. 2 is a view ofthe base-plate and spring of said window-stop. Fig. 3 is the spring, andFig. 4 is the vibratory latch.

In the drawings, B is the window-casing. A is the sash-stile. D is thesash-stop. c is the base-plate of the stop D. h is a spring. 7" is astud on plate 0. m is a broken ring projecting from the face of plate 0.e is a vibratory latch having a circular socket, v therein. 0 is athumb-piece on latch e, and i is a short arm thereon. m is a rectangularsocket in latch 0.

My improved window-stop consists of four pieces only, including the.pivot-screw, which also secures the parts together. Said pieces consistof a base-plate, 0, so formed as to adapt it to be cast of any suitablemetal in complete form, as shown. Said base-plate is provided with ascrew-hole at each end, through which screws are inserted to secure itto the face of the sash-stile A. A third screw-hole, within the ring as,is tapped to receive the pivot-screw n. The ring 00 on plate cis notchedin its upper side to receive the short arm of spring h and in its lowerside to allow the long arm of said spring to project down through it andto have a certain degree of vibratory motion. A stud, r, is fixed on theface of plate 0, near its lower end. The spring h is a single coil ofspring-wire having a long and a short arm, and is placed in ring 00 onplate a, as shown in Fig. 2.

When the parts of the stop are all in operative position, as in Fig. 1,spring h encircles screw it; but as its coil is of greater diameter thanthat of said screw the spring is free to allow the long arm thereof andsaid coil to have the proper motions when said arm is vibrated.

The latch e is provided with a socket, 11 to receive the ring as onplate 0, and a rectangular socket, 00 at its lower end, into which stud'1" projects, and has a thumb-piece, 0, on one side of its lower end anda stop-arm, i, on the opposite side thereof. Said latch 6, like theplate 0, is adapted to be cast in complete form,

as shown. A notch, v, is left in the lower side of the socket 21 throughwhich the long arm of spring h projects when latch e is secured uponplate 0, as in Fig. 1.

It will be seen that the assembling of the parts of this stop consistssimply in placing spring h within ring or, laying latch 12 upon plate 0,and inserting screw n{.

The stop D is applied to the window, as shown in Fig. 1, the side of thewindow-"casing B being provided with a series of stop-cavities for thereception of the stop-arm 'i on latch e, and its operation is asfollows: Supposing the sash to be down, pressing against the thumb-pieceo to swing latch eaway from the casin g B will cause armi to bedrawn outof the stop-cavity in said casing and allow the sash to be raised. Latch6 may now be released, and spring h will swing its lower end toward thecasing, causing the end of arm ito bear and slide against it, and whenit reaches a cavity higher up said arm will be forced into it by saidspring and cause the sash to be stopped and held at that point. Invibrating latch c to draw arm 13 out of one of said stopcavities theextent of the motion of its lower end is governed by stud r, whichenters the cavity as in said latch.

It will be-seen that the vibratory movements of the lower long arm ofspring h are so slight when the stop-latch e is operated that its dura-'bility will be very great.

If desired to provide for drawing arm z'from the stop-cavities in casingB by an upward pressure, which shall first withdraw said arm and thenraise the sash, a thumb-piece may be cast on the left side of the upperend of latch e, opposite the pivot-screw a, to provide for that mode ofoperation.

The form of the arm 'ion latch'e, and the necessary corresponding formof the stopcavities in the side of the casing B, insures a perfectlypositive locking down of the sash when said arm is entered in the lowestof said cavities, for no upward pressure upon the sash from outside cancause the latch to swing away from the casing.

\VhatI claim as my invention is- The within-described improvedwindow-stop, consisting of the base-plate 0, having the broken ring a:thereon the latch 0, having the circular notched socket v and the arm ithereon, and 20 the spring h, all combined substantially asset forth.

ALONZO JOHNSON.

Witnesses:

E. 0. UHAPIN, J. D. GARFIELD.

